* {
    margin: 0;
    padding: 0;
}

html {
    height: 100%;
}

body {
    height: 100%;
}

*html #document {
    height: 100%;
}

#document {
    float: left;
    position: relative;
    min-height: 100%;
    width: 100%;
}

#header {
    float: left;
    width: 100%;
    height: 3em;
}

#container {
    float: left;
    width: 100%;
}

#sidebar {
    float: left;
    width: 10em;
}

#content {
    margin-left: 10em;
}

#empty, #footer {
    height: 2.5em;
}

#empty {
    clear: both;
}

#footer {
    clear: both;
    position: absolute;
    bottom: 0;
    float: left;
    width: 100%;
}